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Exchangeable Securities (Tables) | 12 Months Ended
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Dec. 31, 2020
Exchangeable Securities [Abstract] |
Disclosure of borrowing costs | 750 million Exchangeable Securities
As at | Dec. 31, 2020 | Dec. 31, 2019
| Carrying value | Face value | Interest | Carrying value | Face value | Interest
Exchangeable debentures – due May 1, 2039 | 330 |  | 350 |  | 7 | % | 326 | 350 | 7 | %
Exchangeable preferred shares(1) | 400 |  | 400 |  | 7 | % | — |  | — |  | 7 | %
Total long term debt | 730 |  | 750 |  |  | 326 |  | 350 |  |
(1) Exchangeable preferred share dividends are reported as interest expense.
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, liabilities |
As at | Dec. 31, 2020 | Dec. 31, 2019
Description | Base fair value | Sensitivity | Base fair value | Sensitivity
Option to exchange – embedded derivative | — |  | nil -33 | — |  | nil -27

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- Definition The entire disclosure for borrowing costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 23 -IssueDate 2019-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=23&code=ifrs-tx-2019-en-r&doctype=Standard&dita_xref=IAS23_g26-26_TI -URIDate 2019-03-27 + Details
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- Definition The disclosure of the sensitivity analysis of the fair value measurement of liabilities to changes in unobservable inputs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_h&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Exchangeable Securities [Abstract] + References No definition available. + Details
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